Full Story: National Geographic
This story is part of a National Geographic News series on global water issues.
Nearly 30 percent of the world's cotton supply comes from India and Pakistan, much of that from the Indus River Valley. On average, about 737 billion gallons are withdrawn from the Indus River annually to grow cotton—enough to provide Delhi residents with household water for more than two years.
"Pakistan's entire economy is driven by the textile industry," said Michael Kugelman, a South Asia expert at the Woodrow Wilson International Center for Scholars. "The problem with Pakistan's economy is that most of the major industries use a ton of water—textiles, sugar, wheat—and there's a tremendous amount of water that's not only used, but wasted," he added.
The same is true for India.
Read full story for a detailed analysis of the issue that mars relations between the two nuclear states of South East Asia.